Just Recently (August 2017) Google Added HTTPS:// As A New Search Algorithm
So that means that if your website has a SSL Secure Certificate (with Padlock Icon) then the URL (website address) starts with HTTPS:// and not the standard HTTP://.
By having a Secure Certificate installed for your domain Google will favour your website more than a Non Secure Website.
Google wants you to be safe when browsing the web. So if your website has an SSL Secure Certificate, that basically means the the transfer of data to your computers browser is encrypted, thus safer.
If you want to get a SSL Certificate we offer the best type Extended Validation (EV) SSL Certificates rather than the Domain Validation (DV) SSL Certificates. Why because with a full EV SSL Certificate, the Certificate Authority checks the right of the applicant to use a specific domain name PLUS it conducts a THOROUGH vetting of the organization. Thus it is a real SSL Certification.